Recursive function to add natural numbers

Now since you have learnt about recursive methods, here is a recursive method to add natural numbers up to n.

int sumNNumbers(int n) 

{

   if (n < 1)

      return 0;

   else

      return (n + sumNNumbers(n-1));

}

Write the main() method and checkout the function written above.

There is an alternative method of writing the same. Try out this also:

int sumNNumbers(int n) 

{

    return n<1 0="" :="" font="" nbsp="">n + sumNNumbers(n-1);
}